0.12.21: Add tron transaction signing as json format (#649)

* Add tron transaction signing as json format

* Add tests

* Fix any signer tests and add tron serialization tests

* Fix typo serialization

* Fix tests

* Fix AnySigner tests

0.12.20

Add fee limit to Tron transaction

0.12.19

Fix TRON contract types (#640)

0.12.18: R4R: support htlt transactions for binance chain (#627)

* support htlt transactions for binance chain

* Add tests for htlt transactions

* clang format test file

* fix failed tests

* refactor naming and resolve comment

* change serialization methods to accommodate changes on chain

* refactor indent

0.12.17: Add TRON staking messages (#629)

* Add tron staking contracts

* Add Tron stakin messages

* Add suport for TRC20 tokens

* Added tests for freeze and unfreeze balance

* Finished tests

0.12.16: [Anysigner] Add support to IoTeX, Wanchain and Waves (#624)

* Add IoTex and Wanchain

* Add waves support

* Add tron and nebulas support

* Added more ethereum based coins

0.12.15

Update decred explorer (#617)

0.12.14: Add Decred fee calculation (#613)

* Add decred fee estimation

* Fix old issue template

* Fix codacy warning

0.12.13: Cosmos.validate() return incorrect result (#614)

* Create CoinTypeTests.swift

* Fix cosmos swift tests

* Check hrp prefix

* use compare

* Fix terra tests

0.12.12: Fix XRP max amount (#598)

* - Fix XRP MAX_ALLOWED_AMOUNT (in drops)
- Add FIO blockchain type

* Remove max check